Power-hammer.



J. I. DEPEW.

POWER HAMMER.

APPLICATION FILED SEPT. 27, 1912.

Patented Oct. 21, 1913.

2 SHEETBSHEET 1.

Inventor Witnesses y Attorneys J. I. DEREW.

POWER HAMMER.

APPLICATION FILED SEPT; 27, 1912.

1,976,554. Patented 00112 1, 1913.

2 SHEETS-'SHEET 2 inventor Attorneys I changes in the precise embodiment of the in- I JAMES E. DELPEW, OF LOVE 01W, NEBRASKA.

Specification of Letters ?elfent.

hatented (lot, 211, illlliio semester emu September er, ieia. seen He. 2mm.

2" 0 all whomz'zf may concern:

Be it known a; at a, James 1. Darrow, a citizen of the Uni-ted Eitotes, residing at Loup City, in the county of Sherman and State of Nebraska, have invented a new and useful Power-Hammer, of which the hollowing' is aspecification.

The present invention relates to imliJrorements in power hammers.

'ihe primary object of this invention is the provision of a power hammer, provided with a peculiar form or? frame to which is pirotally connected the lever or movable member, one end or such lever being operably connected through a resilient connec nectcd or disconnected to a power transmitting; pulley.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement or par-ts and in the details of construction hereinatter described and claimed, it being understood that vention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the dra'wmgs-Figure 1 is a side elevation of the complete power hammer. Fig.

2 is a top plan view thereof. Fig. 3 is a section taken on line 3-3 of Fig. 1. Fig. 4 is an enlarged detail sectional view of the stationary and movable member of the hammer showing the adjacent-portions or the hammer carrying lever and a frame. Fig. 5 is a transverse sectional view through the power transmitting pulley, and the clutch actuating and clutch memherthereot. Figs. 6 and '3 are detail views of the wedge-or actuating device for the clutch.

Referring to the drawings, the numeral 1 designates the base, which has mounted thereon the peculiar shaped pedestal 2, having a stationary anvil carryin portion 3, and the lever carrying arm l. %he extreme upper end of the lever carrying arm 4 is provided with the two spaced terminals 5, which are in the nature of a clamp and are held together properly by means of the bolt 6 upon the sleeve 7, said sleeve 7 being so mounted as to form the pivoting or fulcruming point tor the two parallel plates or strips 8 which straddle the upper end of the arm 4- and constitute the walking vbeam or main lover of the power hammer. The two supparting plates 9 intense and are held relatively to the strips 8 by means of the two retaining bolts 8, as clearly shown in Fig. 1. This connection oonstitutes a very important feature of the present invention, in that it properly braces and spaces the two plates 9 and provides a ready means whereby the tulcruming point may be readily connected or disconnected from the arm r.

Connected in the outer free end of the two plates 9 and between the two fastening bolts .11 is the movable member or hammer l,

which as shown in Fig. 4 is provided with the lower reduced striking end or head a and with the larger striking end 6, this hour .mer being so constructed, as shown in Fig. l

as to be reversible.

In the upper end of the stationary anvil member carrying portion 3 oi the pedestal. are the respective lugs 13 which are held together upon the lower anvil member 15 by means of the clamping bolts 14, thus pro.

Viding it means for the removable reception of the anvil member 15 so that the same may be reversed when desired to co-act with the respective striking ends of the movable hammer 12.

Pivoted in the opposite end of the lever l to the end 10 between both members thereof, is a rod or bar 16 provided with the socket 17, the odset lugs 18 of the same being connected to the upper end of the leaf spring 20, while having its upper end free-for slight movement within the socket 1'? and through the upper terminal of the leatspring 20, is a guiding rod 21, whose lower end isthreaded into the terminal 22 of the leaf -spring 20- and is held, in the proper adjusted relation thereto, by means of thelock nut 23. Under ordinary conditions, the spring 20 is not compressed during the str'lkin or downward action, but should the article placed upon the anvil be relatively thick or cause too great resistance tothe movement of the hammer, the spring will be compressed and the rod 21'. will be permitted the necessary slight slide ing movement of its upper end into the socket 17. Upon the extreme lower end of the rod 21 is provided the eccentric strap 24-,

upon the shaft 26'.

which surrounds the eccentric 25 mounted Thus the rotation of the shaft 26 will impart reciprocation to the rod 21, and through its connection to the leaf spring impart a resilient reciprocating movement to the lever 9 so that the hammer member 12 is movedinto and out of engagement with the stationary anvil 15, the sliding movement of the rod 21 within the socket 17 permitting the necessary resiliency at the upper free end 19 of the leaf spring 20, and thus relievingany jar upon the eccentric and its shaft 26 during the striking action of the hammer.

In order to provide a novel means for causing motion to be transmitted to the fast clutch Wheel 27 from the belt actuated wheel 28, the clutch wheel'27 being keyed upon the shaft 26, While the transmission wheel 28 is freely rotatable upon the said shaft, the two Wheels 27 and 28 are provided with frictional contact faces 29 and the transmission wheel 28 is so mounted as to have imparted thereto a sliding movementto and from the clutch wheel 27 and having its face 30 opposed to the Wedge 31, which as clearly shown in detail in Figs. 6 and 7 is provided with the elongated slot 32 which surrounds the shaft 26; I Its fiat face 33 will be moved into engagement with'the flat face 33 of the transmission wheel 28- when the wedge is moved upwardly and its wedging farce Skis moved due to its sliding engagement with the inclined face 35 of, vthe stationary member 35. This action moves the ciutch portion of the transmission wheel 28 into engagement, and thus the rotationof the transmission Wheel 28 will who presents the article-to be acted upon by the movable hammer 12 and. its member 15,

thus permitting the actuation of the double lever 9 at the will of the operator.-

What is claimed is: a

In a power hammer, the combination of a base, a reciprocatory lever mounted thereupon, a shaft mounted upon the base, an eccentric mounted upon the shaft, a rod provided with an eccentric strap, said eccentric strap being mounted upon the' eccen tric, a leaf spring having one terminal connected to the rodand the other terminal of the rod being slidably mounted through the other terminal-of the spring, and a bar connected to the lever and also to the last terminal of the spring, said bar being provided with a socket for the slidable reception of the free terminal of the rod.

In-testimony that "I claim the foregoingas my own, I have hereto: 'aflixed. my signature in the presence-of two witnesses.

JAMES I. DEPEW. Witnesses L. B. jPoLsKi, W. F. Mason. 

